O, a widow had one son, B. in 2000 O executed a document that read, I give my home to T to hold in trust for my use. At death, T is to give the home to B. If B marries a smart girl i also give T $200,000 cash to be invested for the benefit of the person who cares for me the most during my aging years. B was unwed when this document was executed. 2015 O properly executed a will leaving entire estate to T to hold in trust 50% to B and 50% to C. Is this a valid will and does it supersede the trust of 2010. Adhere to rules of estates wills and trsuts